A kind of wear-resistant, damp-heat-resistant PC/abs material and preparation method thereof

An ABS material, heat and humidity resistance technology, applied in the field of polymer materials and their molding processing, can solve the problems of limiting the use range of materials, collision, touch, material embrittlement, etc., to improve the service life, improve the ability to resist external forces, reduce The effect of water absorption

Active Publication Date: 2022-04-01
合肥科拜尔新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PC / ABS is mostly used in decorative parts, which are often bumped and touched, the requirements for the wear resistance of materials are becoming more and more important.
At the same time, due to the existence of ester groups in the molecular chain of the material, the material is easily decomposed when exposed to water at high temperature, resulting in failure reactions such as embrittlement of the material, which greatly limits the scope of use of the material

Method used

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  • A kind of wear-resistant, damp-heat-resistant PC/abs material and preparation method thereof
  • A kind of wear-resistant, damp-heat-resistant PC/abs material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of abrasion-resistant, heat-and-humidity resistant PC / ABS material, concrete steps are as follows:

[0021] 56.7 parts of PC with a number average molecular weight of 20,000 g / mol, 30 parts of ABS with a number average molecular weight of 100,000 g / mol, composed of 20% butadiene, 20% acrylonitrile, and 60% styrene, and 5 parts of modified Hydrophobic graphene oxide, 1.5 parts of acrylonitrile-styrene copolymer grafted maleic anhydride, 6 parts of methyl methacrylate-butadiene-styrene copolymer, 0.2 part of antioxidant 245 and 0.3 part of antioxidant 1076 , 0.3 parts of silicone powder are weighed according to the number of parts, mixed with a high mixer for 3 minutes, and then added to the main feed port at one end of the screw extruder with a length-to-diameter ratio of 40:1, and melted together. Mixing, extruding at 220°C for granulation, screw speed at 400rpm, to obtain PC / ABS materials with wear resistance and heat and humidity resistanc...

Embodiment 2

[0025] A kind of preparation method of abrasion-resistant, heat-and-humidity resistant PC / ABS material, concrete steps are as follows:

[0026] 68.7 parts of PC with a number average molecular weight of 30,000 g / mol, 20 parts of ABS with a number average molecular weight of 120,000 g / mol, composed of 20% butadiene, 25% acrylonitrile, and 55% styrene, and 4 parts of modified Hydrophobic graphene oxide, 2 parts of acrylonitrile-styrene copolymer grafted glycidyl methacrylate, 4 parts of methyl methacrylate-acrylic polymer, 0.8 part of antioxidant 168, 0.5 part of pentaerythritol ester by parts Weigh it, mix it with a high mixer for 4 minutes, then add it into the screw extruder through the main feeding port at one end of the screw extruder with a length-to-diameter ratio of 36:1, and carry out melt blending. The extrusion temperature is 200°C. Granules, screw speed 500rpm, wear-resistant, heat-resistant PC / ABS material.

[0027] The preparation method of above-mentioned modifie...

Embodiment 3

[0030] A kind of preparation method of abrasion-resistant, heat-and-humidity resistant PC / ABS material, concrete steps are as follows:

[0031] 42.5 parts of PC with a number average molecular weight of 25000g / mol, 40 parts of ABS with a number average molecular weight of 80000g / mol, composed of 25% butadiene, 15% acrylonitrile and 60% styrene, and 6 parts of modified Hydrophobic graphene oxide, 2.5 parts of polymethyl methacrylate grafted maleic anhydride, 8 parts of ethylene-methyl acrylate, 0.1 part of antioxidant 245, 0.2 part of antioxidant 1076, 0.7 part of ethylene bisstearamide The parts are weighed, mixed with a high-speed mixer for 3 minutes, and added to the main feed port at one end of the screw extruder with a length-to-diameter ratio of 40:1, and melted and blended. The extrusion temperature is 240 ℃ granulation, screw speed 300rpm, wear-resistant, heat-resistant PC / ABS material.

[0032] The preparation method of above-mentioned modified hydrophobic graphene ox...

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Abstract

The invention discloses a PC / ABS material which is wear-resistant and heat-and-humidity resistant and a preparation method thereof, and belongs to the technical field of polymer materials and their forming and processing. The invention discloses a wear-resistant and heat-and-humid PC / ABS material, which is prepared from PC, ABS, modified hydrophobic graphene oxide, a compatibilizer, a toughening agent, an antioxidant and a lubricant. The invention adds the modified hydrophobic graphene oxide into the PC / ABS material as a wear-resistant agent, which has excellent wear-resistant performance; and compared with the traditional modification method, it does not affect the processing performance, has good compatibility, and has no precipitation , the surface of the workpiece and other problems, at the same time, the addition of strong hydrophobic graphene oxide can reduce the water absorption of PC / ABS materials, thereby improving the moisture and heat resistance of the material, and improving the processing of the material due to moisture absorption. It can be widely used in automotive interior parts, home appliances and other fields.

Description

technical field [0001] The invention relates to the technical field of polymer materials and their molding processing, and more specifically relates to a wear-resistant and heat-and-humidity resistant PC / ABS material and a preparation method thereof. Background technique [0002] PC / ABS alloy is an engineering plastic alloy developed in the mid-1960s. It has the advantages of good mechanical properties, heat resistance and electrical properties of PC and excellent processing performance of ABS. It is widely used in automobiles, In the field of home appliances and electronic appliances. However, because PC / ABS is mostly used in decorative parts, which are often bumped and touched, the requirements for the wear resistance of the material are becoming more and more important. At the same time, due to the existence of ester groups in the molecular chain of the material, the material is easily decomposed when exposed to water at high temperature, resulting in failure reactions s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L51/00C08L51/04C08L33/12C08L53/00C08L83/04C08K13/06C08K9/06C08K9/04C08K9/02C08K3/04C08K5/103C08K5/20
CPCC08L69/00C08L55/02C08L2201/08C08L2205/035C08L2205/08C08L2205/06C08L51/003C08L51/04C08L83/04C08K13/06C08K9/06C08K9/04C08K9/02C08K3/042C08L33/12C08K5/103C08L23/0869C08K5/20C08L53/00C08L23/0884
Inventor 姜之涛
Owner 合肥科拜尔新材料股份有限公司
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